<!DOCTYPE html>
<html lang="en">
<html xmlns="http://www.thymeleaf.org" lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>文件下载页面</h1>
<hr>
<a th:href="@{/updown/download(fname=1.jpg)}">点击下载文件</a>
</body>
</html>